Manufacturer & installer – London, Kent & Surrey
Windows and doors, made in our own Orpington factory
Aluminium, timber and uPVC – surveyed, manufactured and fitted by one team. No middlemen, no subcontractors, and one number to call if anything needs putting right.
Free, no-obligation quote. We reply within 2 working days.
What are you looking for?
Six routes, not fourteen. Each one leads to a hub page that compares the systems within it sightlines, U-values, maximum sizes and what drives the price.
Windows
Aluminium, timber and uPVC. Casement, flush casement, sliding sash and tilt-and-turn.
Doors
Front doors, bi-folds, sliding, French, internal steel-look and fire-rated.
Glass roofs & rooflights
Lean-to roofs, roof lanterns and flat rooflights for kitchen extensions.
Sash & heritage Windows
Aluminium, timber and uPVC. Casement, flush casement, sliding sash and tilt-and-turn.
Ex-display & clearance
Windows and doors available immediately, with sizes, specs and prices listed.
Case studies
What we’ve built across London, Kent and Surrey — with the systems used on each.
We make what we sell
Most window companies buy in and fit. We manufacture. Your frames are made on Murray Road in Orpington, measured by our own surveyor rather than a salesperson, and installed by our own FENSA-registered fitters.
That matters most when something goes wrong. There is one company responsible for the survey, the product and the installation — so there is no one to pass you between.
20 yrs
Manufacturing in Orpington
10 yrs
Guarantee on product and fitting
Premier
Rayners Partner – one of a small number in the UK
How a Grabex project runs
Five stages, roughly four months from first call to sign-off. Knowing this up front is the difference between filling in a quote form and closing the tab.
Step 1
Enquiry
Tell us the products, rough sizes and your timescale. We come back with an indicative price range.
Within 2 Working Days
Step 2
Showroom or home visit
See and operate the systems in Orpington, or we bring samples to you.
booked to suit you
Step 3
Technical Survey
Measured by our surveyor, not a salesperson. This is when the
price becomes fixed.
Approx. 1 week
Step 4
Manufacture
Made in our Orpington factory to your survey dimensions and
colour.
6-10weeks
Step 5
Installation
Our own fitters, FENSA registered. Certificate and guarantee issued on completion.
1 – 5 days
What it costs
We can’t publish fixed prices — every opening is different. But you deserve to know whether we are in your range before you spend twenty minutes on a form. These are honest starting points for supplied and fitted work in London and Kent.
Product | Typically from | What moves the price |
|---|---|---|
uPVC casement window | £000 | Size, colour and foil finish, glazing specification |
Aluminium casement window | £000 | Sightline, RAL colour, dual colour, thermal spec |
Timber sliding sash windows | £000 | Timber species, glazing bars, conservation detailing |
Aluminium bi-fold, 2 panel | £0,000 | Panel count, threshold type, colour, opening configuration |
Slimline sliding door, 2 panel | £0,000 | Glass size and weight, sightline, motorisation |
Lean to glass roof | £0,000 | Span, glass specification, structural requirement |
Prices include survey, manufacture, installation, FENSA certification and the 10-year guarantee. VAT shown separately at quotation.
Rated 4.8 on Trustpilot
4.8
Based on 250+ reviews – Read them all on Trustpilot
Recent projects
Real installations, with the systems used and what they cost.
Open-Corner Sliding Doors for a Contemporary Surrey Home
This project involved an extensive remodel of the side and rear of a detached family home in Great Bookham, near Leatherhead, Surrey.
Learn more…
Contemporary House Extension in Ealing – London
This contemporary Ealing extension creates a modern, open-plan living space seamlessly connected to the existing property.
Learn more…
Reynaers Aluminium Glazing for a New Build Home in Orpington
High-quality new build home in Orpington featuring carefully coordinated glazing to maximise natural light, views, and long-term performance.
Learn more…
Surrey Project | SL68 Windows, CF77 Doors & CF72 Bi-Folding Doors
From the outset, the homeowners wanted more than new windows and doors; they wanted to completely redefine how the space felt, flowed and functioned.
Learn more…
CF72 Bi-Folding Door & Aluminium Flat Skylights
Carefully specified glazing transforms this traditional agricultural building into a contemporary family home while preserving its original character.
Learn more…
Hi-Vision Sliding Door & Aluminium Casement Windows
Defined by clean lines, natural materials and open-plan living, the project features a complete glazing package by Grabex.
Learn more…
One Showroom, One Factory
Come and open the doors, feel the weight of the sashes and look at colours in daylight. No appointment pressure and no sales pitch.
Factory and showroom
Orpington
Grabex Windows Ltd
Murray Road, Orpington
Kent BR5 3QY
020 8685 9651
Monday – Friday 08:00 – 17:00
Before you buy
Three things worth reading if you are early in the process.
CONDENSATION
Why there is water inside your double glazing and what it means
How to tell a failed sealed unit from ordinary surface condensation, and when a repair is possible.
PLANNING & HERITAGE
Windows in conservation areas and listed buildings
When you need consent, what councils normally accept, and how slimline glazing changes the answer.
ACOUSTICS
Reducing traffic noise on a busy London road
What actually works glass thickness, cavity width and laminated interlayers and what does not.
Questions we get asked
Tell us about your project
What happens next: We will reply within two working days with indicative range and any questions.
Prefer to talk? Call 020 8685 9651, Monday to Friday, 8:00am – 5:00pm
Grabex Windows LTD
Company number 06322670
Murray Road, Orpington
Kent, BR5 3QY
020 8685 9651
Showroom in Orpington
Mon-Fri: 8:00am – 5:00pm
FENSA APPROVED
REYNAERS PREMIER PARTNER
GGF MEMBER
MADE IN ENGLAND
10-YEAR GUARANTEE
©Grabex Windows Ltd 2007 -2026 Registered in England, company number
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